Acoustic, Myoelectric, and Aerodynamic Parameters of Euphonic and Dysphonic Voices: A Systematic Review of Clinical Studies

Clara Puig-Herreros,José Luis Sanz,Vicent Rosell-Clari,Luz Barona

doi:10.3390/app11178191

Clara Puig-Herreros, José Luis Sanz + Show 2 more

Open Access

https://doi.org/10.3390/app11178191

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Abstract

Background: At present, there is no clinical consensus on the concept of normal and dysphonic voices. For many years, the establishment of a consensus on the terminology related to normal and pathological voices has been studied, in order to facilitate the communication between professionals in the field of the voice. Aim: systematically review the literature to compare and learn more precisely the measurable and objective characteristics of the acoustic, aerodynamic and surface electromyographic parameters of the normal and dysphonic voices. Methods: The PRISMA 2020 methodology was used as a review protocol together with the PICO procedure to answer the research question through six databases. Results: In total, 467 articles were found. After duplicate records were removed from the selection, the inclusion and exclusion criteria were applied and 19 articles were eligible. A qualitative synthesis of the included studies is presented in terms of their methodology and results. Conclusions: Studying the acoustic, aerodynamic, and electromyographic parameters with more precision, in both normal and dysphonic voices, will allow health professionals working in the field of voice (speech therapy, otorhinolaryngology, phoniatrics, etc.) to establish a diagnostic and detailed consensus of the vocal pathology, enhancing the communication and generalization of results worldwide.

Highlights

To enable rehabilitation that adapts to the needs of the patient, a functional evaluation of the voice is necessary, which requires an otorhinolaryngological medical diagnosis and a speech therapy evaluation [1].Through the functional evaluation of the voice, the patients’ vocal behavior should be observed by analyzing aspects related to anatomy and physiology and the negative vocal habits they present, thereby determining the severity of the disorder and establishing a prognosis and/or a diagnosis [2].With regards to speech therapy, a detailed anamnesis of the vocal pathology and a postural examination should be carried out
A summary of the results of the included studies in terms of acoustic and aerodynamic parameters is presented in Tables 4 and 5, respectively
In accordance with the objective of the present study, which aimed to evaluate the conditions of the normal and dysphonic voices in adults from acoustic, aerodynamic, and surface electromyographic parameters, it can be highlighted that the results from the included studies show differences between both voices

Summary

Introduction

To enable rehabilitation that adapts to the needs of the patient, a functional evaluation of the voice is necessary, which requires an otorhinolaryngological medical diagnosis and a speech therapy evaluation [1].Through the functional evaluation of the voice, the patients’ vocal behavior should be observed by analyzing aspects related to anatomy and physiology and the negative vocal habits they present, thereby determining the severity of the disorder and establishing a prognosis and/or a diagnosis [2].With regards to speech therapy, a detailed anamnesis of the vocal pathology and a postural examination should be carried out. A subjective assessment of the voice (i.e., auditory perceptual analysis) should be performed, preferably by a speech therapist trained in alterations of the voice; as a complementary evaluation to an objective assessment of the voice through acoustic, aerodynamic, and surface electromyographic analyses, among others. For this reason, being able to perform an exhaustive evaluation of a majority of the parameters and structures that are related to vocal emission, helps and facilitates the professionals who work with it in a clinical manner For professionals working to develop, describe and/or rehabilitate human voices, it is necessary to be able to recognize and agree on terms and vocal parameters [3]

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